SteamVR Oculus Touch controller input not detected

I imported SteamVR plugin from the assets store, then I dragged the ‘Player.prefab’ into the scene.

Normally I should be able to use my controllers and buttons on it. But in my case I can see my hands but pressing the buttons does not do anything.

I am using and Oculus Rift CV-1 with the Touch controllers.
My drivers and everything are up to date.
Tracking the movement of the controllers works, but pressing the buttons does not do anything.

Here’s a short video showing how I set it up:

Is there any information I could add?